STATE AGRICULTURAL SOCIETY. 
845 
POPLAR. LEAVES* 
351. Americas Clostera, Clostera Americana, Harris. 
Consuming the leaves in summer, a pale yellow caterpillar with two 
little black warts close together on the back of its fourth and eleventh 
rings, three slender black lines on its back and three in a broad dusky 
stripe along each side ; its pupa passing the winter in a cocoon under 
leaves or rubbish on the ground; the middle of June giving out a pale 
grayish moth more or less varied with brown, its fore wings with three 
whitish bands, the first transverse and dislocated, the second oblique and 
giving off a transverse branch from its middle which runs to the inner 
margin uniting with the third band, the two thus forming a letter V, a faint 
whitish band across the middle of the hind wings; width about 1.35. See 
Harris’ Treatise, p. 334. 
The Clostera suffusa of Stephens was very probably described from a 
specimen of this species which found its way accidentally into the collec¬ 
tion from whence he obtained it. Our moth shows a whitish spot or 
stigma near the center of the fore wings, this spot being sometimes dusky in 
its middle, as represented on the left side in Stephens’ figure. Were the first 
band in this figure dislocated with its outer half carried somewhat towards 
the base of the wing, and the pale shade across the middle of the hind wings 
less angularly bent, all doubts upon this subject would be removed. 
352. V-markeb Clostera, Clostera van, new species. 
A moth which is very similar to the preceding, but darker colored and 
smaller, with the bands more slender and distinct, may be readily distin¬ 
guished from that species by its having the first band not dislocated but in 
its middle strongly curved backwards, the apex of the curve usually form¬ 
ing an acute point. The last band also is much more strongly undulated 
near its outer end, curving backwards almost in a semicircle, and is of a 
much more vivid white color, and broadly bordered on its hind side with 
bright rust-red. Its hind wings also are destitute of the paler band across 
their middle. Its width is about 1.20. 
I am unacquainted with its larva, but like the other species of this 
genus, it doubtless feeds on the poplars and willows. Though quite rare 
in my own vicinity, it is ofteuer met with than the two other species. 
Other worms feeding on the leaves of poplars are larvse of the Io empe¬ 
ror moth § 81, the White-bordered butterfly, oftenest met with on 
willows, the New York measure-worm more attached to the linden, and 
others which are yet unknown in their perfect state. 
353. Poplar-stem gall-louse. Pemphigus Populicaulis, now specie3. (Homoptera. 
Apliidso.) 
Forming imperfectly globular galls the size of a bullet at the junction 
of the leaf with its stalk, these galls having a mouth-like orifice on their 
under side, and a large cavity within, crowded with small dull white lice 
and their white cast skins, and with winged lice of a blue black color, their 
antonme reaching beyond the base of their wings, the rib-vein of their 
